Laboratory induction of pupation and emergence in Anobium punctatum (Deg) (Col Anobiidae)
R W Berry
The reluctance of Anobium punctatum to pupate and emerge outside its normal summer emergence period has led to attempts to induce pupation by artificial manipulation of the temperature conditions at which larvae are held. Infested hazel (Corylus avellana) twigs were subjected to temperature schedules which simulated some aspects of a spring climate. It was found that 40 days of a diurnal temperature fluctuation between 7°C and 13°C induced 60% emergence beginning 80 days after return to a constant 22°C. A progressive increase in temperatures after this initial period of 40 days failed to give any marked change in percentage emergence.